From 8ea8a6804b31df52cdc4fb6d9bed844913154664 Mon Sep 17 00:00:00 2001
From: John Polstra <jdp@FreeBSD.org>
Date: Sat, 20 Jul 2002 23:48:59 +0000
Subject: [PATCH] Fix overflows in intermediate calculations in
 sysctl_msec_to_ticks(). At hz values of 1000 and above the overflows caused
 net.inet.tcp.keepidle to be reported as negative.

MFC after:	3 days
---
 sys/netinet/tcp_timer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/netinet/tcp_timer.c b/sys/netinet/tcp_timer.c
index c9b423b0683b..421c5c3fe1c3 100644
--- a/sys/netinet/tcp_timer.c
+++ b/sys/netinet/tcp_timer.c
@@ -74,13 +74,13 @@ sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS)
 	int error, s, tt;
 
 	tt = *(int *)oidp->oid_arg1;
-	s = tt * 1000 / hz;
+	s = (int)((int64_t)tt * 1000 / hz);
 
 	error = sysctl_handle_int(oidp, &s, 0, req);
 	if (error || !req->newptr)
 		return (error);
 
-	tt = s * hz / 1000;
+	tt = (int)((int64_t)s * hz / 1000);
 	if (tt < 1)
 		return (EINVAL);